Nitrogen and sulfur self-doped porous carbon from brussel sprouts as electrode materials for high stable supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57464-57472 ◽  
Author(s):  
Jiangfeng Li ◽  
Guangtao Zan ◽  
Qingsheng Wu
Keyword(s):  
Activated Carbon ◽  
Electrode Material ◽  
Porous Carbon ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Rate Capability ◽  
Electrochemical Capacitor ◽  
Good Rate Capability

Brussel sprout-derived activated carbon materials synthesized through the activation of KOH as electrode material for electrochemical capacitor shows a good rate capability.

Nitrogen-enriched activated carbons from waste particleboard used as electrode materials for supercapacitors: effects of activating agent on surface characteristics

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 50843-50850 ◽  
Author(s):  
T. X. Shang ◽  
J. Zhang ◽  
F. L. Fan ◽  
X. J. Jin
Keyword(s):  
Activated Carbon ◽  
Electrode Material ◽  
Electrode Materials ◽  
Activated Carbons ◽  
Rate Capability ◽  
Surface Characteristics ◽  
Carbon Electrodes ◽  
Promising Candidate ◽  
Activating Agent ◽  
Good Rate Capability

The nitrogen-enriched activated carbon electrodes prepared from waste particleboard exhibits high gravimetric specific capacitances, good rate capability, and excellent lone-term stability, making such electrode material a promising candidate for supercapacitors.

Nitrogen-enriched electrospun porous carbon nanofiber networks as high-performance free-standing electrode materials

2014 ◽  
Vol 2 (46) ◽  
pp. 19678-19684 ◽  
Author(s):  
Ding Nan ◽  
Zheng-Hong Huang ◽  
Ruitao Lv ◽  
Lu Yang ◽  
Jian-Gan Wang ◽  
...  
Keyword(s):  
Anode Material ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Rate Capability ◽  
Free Standing ◽  
Porous Carbon Nanofiber ◽  
Good Rate Capability

Nitrogen-enriched electrospun carbon nanofiber networks were prepared to use as a free-standing LIB anode material with ultrahigh capacity and good rate capability.

scholarly journals sp2–sp3 Hybrid Porous Carbon Materials Applied for Supercapacitors

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5990
Author(s):  
Ji Su Chae ◽  
Won-seop Kang ◽  
Kwang Chul Roh
Keyword(s):  
Activated Carbon ◽  
Amorphous Carbon ◽  
Porous Carbon ◽  
Carbon Nanostructures ◽  
Electrode Materials ◽  
Carbon Materials ◽  
High Electron ◽  
Porous Carbon Materials ◽  
Spherical Carbon ◽  
Synthesis Strategy

Carbon materials have gained considerable attention in recent years due to their superior properties. Activated carbon has been used in supercapacitors due to its density and rapid adsorption capability. The sp2–sp3 hybrid porous carbon materials are synthesized using herringbone-type carbon nanofibers (CNFs) and carbonized spherical phenol resins, with KOH as the activating agent. The morphology of the hybrid porous carbon facilitates the formation of ribbon-like nanosheets from highly activated CNFs wrapped around spherical resin-based activated carbon. The etching and separation of the CNFs produce a thin ribbon-like nanosheet structure; these CNFs simultaneously form new bonds with activated carbon, forming the sp2–sp3 hybrid porous structure. The relatively poor electrical conductivity of amorphous carbon is improved by the 3D conductive network that interconnects the CNF and amorphous carbon without requiring additional conductive material. The composite electrode has high electron conductivity and a large surface area with a specific capacitance of 120 F g−1. Thus, the strategy substantially simplifies the hybrid materials of sp2-hybridized CNFs and sp3-hybridized amorphous spherical carbon and significantly improves the comprehensive electrochemical performance of supercapacitors. The developed synthesis strategy provides important insights into the design and fabrication of carbon nanostructures that can be potentially applied as electrode materials for supercapacitors.

Hexagonal petal-like cobalt oxide nanowire arrays encapsulated by MOF-derived Co/N-codoped carbon for boosting electrochemical capacitor behaviour

2021 ◽  
Author(s):  
Xiao-Man Cao ◽  
Zhi-Jia Sun ◽  
Zheng-Bo Han
Keyword(s):  
Cobalt Oxide ◽  
Rate Capability ◽  
Electrochemical Capacitor ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Unique Structure ◽  
Good Rate Capability

A novel core–shell hetero-structured electrode (NF@CoO@Co/N–C) is designed and synthesized via a “anchor-etch-calcine” process for boosting electrochemical capacitor behaviour. The unique structure endows NF@CoO@Co/N–C with ultrahigh areal capacitances and good rate capability.

scholarly journals Facile fabrication of hierarchical porous carbon for a high-performance electrochemical capacitor

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46329-46335 ◽  
Author(s):  
Guixiang Du ◽  
Qiuxiao Bian ◽  
Jingbo Zhang ◽  
Xinhui Yang
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Rate Capability ◽  
Electrochemical Capacitor ◽  
High Specific Capacitance ◽  
Cycling Performance ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Facile Fabrication ◽  
Rapid Pyrolysis

A facile and rapid pyrolysis method is developed for the synthesis of 3D hierarchical porous carbon, which exhibits a high specific capacitance, good rate capability and good cycling performance.

Cellulose Nanofibers Derived Carbon Aerogel with 3D Multiscale Pore Architecture for High-Performance Supercapacitors

Nanoscale ◽  
2021 ◽  
Author(s):  
Lumin Chen ◽  
Hou-Yong Yu ◽  
Ziheng Li ◽  
Xiang Chen ◽  
Wenlong Zhou
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Cellulose Nanofibers ◽  
Rate Capability ◽  
Carbon Aerogel ◽  
Large Specific Surface Area ◽  
Hierarchical Porous Structure ◽  
Pore Architecture ◽  
Hierarchical Porous

Carbon materials are highly promising electrode materials for supercapacitors, due to their hierarchical porous structure and large specific surface area. However, the limited specific capacitance and inferior rate capability significantly...

One-step Synthesis of O-self-doped Honeycomb-like Hierachically Porous Carbons for Supercapacitors

2021 ◽  
pp. 1-19
Author(s):  
Shiying Lin ◽  
Lanlan Mo ◽  
Feijun Wang
Keyword(s):  
Electrode Material ◽  
Porous Carbon ◽  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Electrode System ◽  
Porous Carbon Material ◽  
Hierarchical Porous ◽  
One Step ◽  
Porous Carbon Electrode

Abstract A facile and environmentally friendly approach to produce self-doped hierachically porous carbon as electrode material for high-performance supercapacitor was demonstrated. 3D honeycomb-like hierarchically porous carbon was successfully obtained by one-step carbonization and activation of sodium carboxymethyl cellulose (CMC) via K2CO3. With the optimized temperature of carbonization and activation, the porous carbon material achieved well-shaped hierarchically pores (micro-, meso and macropores) like a honeycomb, ultrahigh specific surface area (1666 m2·g-1), as well as highly O-self-doping (3.6 at.%), endowing an excellent electrochemical properties for the electrode in three-electrode system. The porous carbon electrode material delivered a high specific capacitance of 300.8 F·g-1 at 1 A·g-1, an eminent rate capability of 228.4 F·g-1 at the current density up to 20 A·g-1 and outstanding cycle stability of 94.3% retention after 10000 cycles. Therefore, the CMC derived hierarchical porous carbon activated by K2CO3 would have promising foreground in application of supercapacitors.

scholarly journals Easy approach to synthesize N/P/K co-doped porous carbon microfibers from cane molasses as a high performance supercapacitor electrode material

RSC Advances ◽  
2014 ◽  
Vol 4 (66) ◽  
pp. 34739-34750 ◽  
Author(s):  
Alfin Kurniawan ◽  
L. K. Ong ◽  
Fredi Kurniawan ◽  
C. X. Lin ◽  
Felycia E. Soetaredjo ◽  
...  
Keyword(s):  
Electrode Material ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Supercapacitor Electrode ◽  
Cane Molasses ◽  
Electrochemical Application ◽  
Carbon Microfibers ◽  
First Time ◽  
Co Doped

For the first time, porous carbon microfibers co-doped with N/P/K were synthesized from cane molasses by combination of electrospinning and carbonization techniques and its electrochemical application to electrode materials for supercapacitors was investigated.

Glucose-Based Activated Carbon Spheres as Electrode Material for Electrochemical Capacitor

2017 ◽  
Vol 17 (6) ◽  
pp. 3835-3841 ◽  
Author(s):  
Xuan Du ◽  
Shuhui Ma ◽  
Wei Zhao ◽  
Zhilin Zheng ◽  
Tao Qi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electrode Material ◽  
Electrochemical Capacitor ◽  
Carbon Spheres ◽  
Activated Carbon Spheres

Hierarchical porous biomass activated carbon for hybrid battery capacitors derived from persimmon branches

2020 ◽  
Vol 10 (4) ◽  
pp. 523-530 ◽  
Author(s):  
Jiaxin Peng ◽  
Juan Yu ◽  
Bicheng Meng ◽  
Lejie Wang ◽  
Xingliang Zhang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Materials ◽  
Rate Capability ◽  
Mesoporous Structure ◽  
Koh Activation ◽  
Biomass Carbon ◽  
Cycle Stability ◽  
Capacity Reservation ◽  
Hierarchical Porous ◽  
Graphite Structure

Activated carbon materials are used in hybrid battery capacitors. They reduce energy density of devices, and can greatly improve the cycle life and power density. Herein, we used fast-growing persimmon branches in Shaanxi as a biomass carbon source. The persimmon branch activated carbon (PB-AC850) material was found to exhibit abundant graded pore structure similar to graphite structure after KOH activation. The macro/mesoporous structure in PB-AC850 facilitated the ions (solvated PF-6 ) transport, resulting in much better rate capability as compared to commercial activated carbon. It was moreover found from preparation of the hybrid battery capacitor that the addition of activated carbon reduced resistance and polarization of the device. LFP+PB-AC850 exhibited excellent cycle stability with high to 93.4% capacity reservation after 500 cycles at 5C.

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